/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop.i
--------------------------------------------------------------------------------
This is Ultimate 0.2.0-7d8eed3
[2020-11-07 02:03:49,377 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-11-07 02:03:49,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-11-07 02:03:49,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-11-07 02:03:49,445 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-11-07 02:03:49,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-11-07 02:03:49,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-11-07 02:03:49,465 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-11-07 02:03:49,469 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-11-07 02:03:49,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-11-07 02:03:49,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
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[2020-11-07 02:03:49,481 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-11-07 02:03:49,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-11-07 02:03:49,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-11-07 02:03:49,485 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-11-07 02:03:49,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-11-07 02:03:49,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-11-07 02:03:49,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-11-07 02:03:49,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-11-07 02:03:49,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-11-07 02:03:49,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-11-07 02:03:49,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-11-07 02:03:49,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-11-07 02:03:49,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2020-11-07 02:03:49,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-11-07 02:03:49,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
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[2020-11-07 02:03:49,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
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[2020-11-07 02:03:49,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
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[2020-11-07 02:03:49,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
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[2020-11-07 02:03:49,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2020-11-07 02:03:49,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-11-07 02:03:49,534 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf
[2020-11-07 02:03:49,549 INFO L113 SettingsManager]: Loading preferences was successful
[2020-11-07 02:03:49,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-11-07 02:03:49,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-11-07 02:03:49,551 INFO L138 SettingsManager]: * sizeof long=4
[2020-11-07 02:03:49,552 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-11-07 02:03:49,552 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-11-07 02:03:49,552 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-11-07 02:03:49,552 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-11-07 02:03:49,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-11-07 02:03:49,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-11-07 02:03:49,553 INFO L138 SettingsManager]: * sizeof long double=12
[2020-11-07 02:03:49,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-11-07 02:03:49,554 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-11-07 02:03:49,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-11-07 02:03:49,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-11-07 02:03:49,555 INFO L138 SettingsManager]: * Size of a code block=SingleStatement
[2020-11-07 02:03:49,555 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-11-07 02:03:49,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-11-07 02:03:49,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-11-07 02:03:49,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-11-07 02:03:49,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2020-11-07 02:03:49,556 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-11-07 02:03:49,557 INFO L138 SettingsManager]: * Use separate solver for trace checks=false
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2020-11-07 02:03:49,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-11-07 02:03:50,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-11-07 02:03:50,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-11-07 02:03:50,035 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-11-07 02:03:50,035 INFO L275 PluginConnector]: CDTParser initialized
[2020-11-07 02:03:50,037 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop.i
[2020-11-07 02:03:50,143 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21ecfaf91/4873e6dd3d3949a689475389ed31ae6b/FLAG7e69216e7
[2020-11-07 02:03:50,801 INFO L306 CDTParser]: Found 1 translation units.
[2020-11-07 02:03:50,802 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/NetBSD_loop.i
[2020-11-07 02:03:50,816 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21ecfaf91/4873e6dd3d3949a689475389ed31ae6b/FLAG7e69216e7
[2020-11-07 02:03:51,170 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21ecfaf91/4873e6dd3d3949a689475389ed31ae6b
[2020-11-07 02:03:51,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-11-07 02:03:51,184 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-11-07 02:03:51,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-11-07 02:03:51,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-11-07 02:03:51,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-11-07 02:03:51,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:03:51" (1/1) ...
[2020-11-07 02:03:51,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7211a756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:51, skipping insertion in model container
[2020-11-07 02:03:51,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:03:51" (1/1) ...
[2020-11-07 02:03:51,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-11-07 02:03:51,240 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-11-07 02:03:51,459 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-11-07 02:03:51,482 INFO L203 MainTranslator]: Completed pre-run
[2020-11-07 02:03:51,513 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-11-07 02:03:51,537 INFO L208 MainTranslator]: Completed translation
[2020-11-07 02:03:51,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:51 WrapperNode
[2020-11-07 02:03:51,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-11-07 02:03:51,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-11-07 02:03:51,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-11-07 02:03:51,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-11-07 02:03:51,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:51" (1/1) ...
[2020-11-07 02:03:51,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:51" (1/1) ...
[2020-11-07 02:03:51,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:51" (1/1) ...
[2020-11-07 02:03:51,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:51" (1/1) ...
[2020-11-07 02:03:51,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:51" (1/1) ...
[2020-11-07 02:03:51,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:51" (1/1) ...
[2020-11-07 02:03:51,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:51" (1/1) ...
[2020-11-07 02:03:51,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-11-07 02:03:51,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-11-07 02:03:51,614 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-11-07 02:03:51,614 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-11-07 02:03:51,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:51" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-11-07 02:03:51,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-11-07 02:03:51,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-11-07 02:03:51,744 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2020-11-07 02:03:51,744 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-11-07 02:03:51,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-11-07 02:03:51,745 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-11-07 02:03:51,746 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-11-07 02:03:51,746 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-11-07 02:03:51,746 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail
[2020-11-07 02:03:51,747 INFO L130 BoogieDeclarations]: Found specification of procedure __assert
[2020-11-07 02:03:51,747 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2020-11-07 02:03:51,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-11-07 02:03:51,748 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-11-07 02:03:51,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-11-07 02:03:51,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-11-07 02:03:51,749 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-11-07 02:03:51,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-11-07 02:03:51,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2020-11-07 02:03:51,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-11-07 02:03:51,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-11-07 02:03:51,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-11-07 02:03:51,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-11-07 02:03:52,271 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-11-07 02:03:52,271 INFO L298 CfgBuilder]: Removed 1 assume(true) statements.
[2020-11-07 02:03:52,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:03:52 BoogieIcfgContainer
[2020-11-07 02:03:52,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-11-07 02:03:52,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-11-07 02:03:52,277 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-11-07 02:03:52,281 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-11-07 02:03:52,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:03:51" (1/3) ...
[2020-11-07 02:03:52,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf8a9bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:03:52, skipping insertion in model container
[2020-11-07 02:03:52,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:03:51" (2/3) ...
[2020-11-07 02:03:52,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf8a9bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:03:52, skipping insertion in model container
[2020-11-07 02:03:52,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:03:52" (3/3) ...
[2020-11-07 02:03:52,286 INFO L111 eAbstractionObserver]: Analyzing ICFG NetBSD_loop.i
[2020-11-07 02:03:52,306 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-11-07 02:03:52,310 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-11-07 02:03:52,326 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-11-07 02:03:52,356 INFO L377 AbstractCegarLoop]: Interprodecural is true
[2020-11-07 02:03:52,356 INFO L378 AbstractCegarLoop]: Hoare is true
[2020-11-07 02:03:52,357 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2020-11-07 02:03:52,357 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-11-07 02:03:52,357 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-11-07 02:03:52,357 INFO L382 AbstractCegarLoop]: Difference is false
[2020-11-07 02:03:52,357 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-11-07 02:03:52,358 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-11-07 02:03:52,376 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states.
[2020-11-07 02:03:52,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2020-11-07 02:03:52,387 INFO L414 BasicCegarLoop]: Found error trace
[2020-11-07 02:03:52,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-07 02:03:52,389 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-07 02:03:52,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-11-07 02:03:52,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1346092785, now seen corresponding path program 1 times
[2020-11-07 02:03:52,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-11-07 02:03:52,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835030984]
[2020-11-07 02:03:52,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-07 02:03:52,504 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation
[2020-11-07 02:03:52,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-07 02:03:52,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-11-07 02:03:52,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-07 02:03:52,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-07 02:03:52,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835030984]
[2020-11-07 02:03:52,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-11-07 02:03:52,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-11-07 02:03:52,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103167888]
[2020-11-07 02:03:52,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-11-07 02:03:52,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-11-07 02:03:52,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-11-07 02:03:52,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2020-11-07 02:03:52,969 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 8 states.
[2020-11-07 02:03:53,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-07 02:03:53,672 INFO L93 Difference]: Finished difference Result 83 states and 101 transitions.
[2020-11-07 02:03:53,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2020-11-07 02:03:53,674 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33
[2020-11-07 02:03:53,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-07 02:03:53,688 INFO L225 Difference]: With dead ends: 83
[2020-11-07 02:03:53,688 INFO L226 Difference]: Without dead ends: 49
[2020-11-07 02:03:53,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182
[2020-11-07 02:03:53,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2020-11-07 02:03:53,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46.
[2020-11-07 02:03:53,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states.
[2020-11-07 02:03:53,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions.
[2020-11-07 02:03:53,846 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 33
[2020-11-07 02:03:53,850 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-11-07 02:03:53,850 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions.
[2020-11-07 02:03:53,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-11-07 02:03:53,851 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions.
[2020-11-07 02:03:53,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2020-11-07 02:03:53,854 INFO L414 BasicCegarLoop]: Found error trace
[2020-11-07 02:03:53,855 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-07 02:03:53,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-11-07 02:03:53,858 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-07 02:03:53,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-11-07 02:03:53,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1045691701, now seen corresponding path program 1 times
[2020-11-07 02:03:53,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-11-07 02:03:53,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569895576]
[2020-11-07 02:03:53,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-07 02:03:53,870 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation
[2020-11-07 02:03:53,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-07 02:03:54,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-11-07 02:03:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-07 02:03:54,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27
[2020-11-07 02:03:54,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-07 02:03:54,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-07 02:03:54,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569895576]
[2020-11-07 02:03:54,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-11-07 02:03:54,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2020-11-07 02:03:54,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36991561]
[2020-11-07 02:03:54,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-11-07 02:03:54,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-11-07 02:03:54,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-11-07 02:03:54,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2020-11-07 02:03:54,121 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 9 states.
[2020-11-07 02:03:54,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-07 02:03:54,714 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions.
[2020-11-07 02:03:54,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2020-11-07 02:03:54,715 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38
[2020-11-07 02:03:54,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-07 02:03:54,717 INFO L225 Difference]: With dead ends: 57
[2020-11-07 02:03:54,717 INFO L226 Difference]: Without dead ends: 53
[2020-11-07 02:03:54,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240
[2020-11-07 02:03:54,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2020-11-07 02:03:54,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51.
[2020-11-07 02:03:54,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states.
[2020-11-07 02:03:54,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions.
[2020-11-07 02:03:54,742 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 38
[2020-11-07 02:03:54,743 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-11-07 02:03:54,743 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions.
[2020-11-07 02:03:54,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-11-07 02:03:54,743 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions.
[2020-11-07 02:03:54,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2020-11-07 02:03:54,745 INFO L414 BasicCegarLoop]: Found error trace
[2020-11-07 02:03:54,746 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-07 02:03:54,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-11-07 02:03:54,747 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-07 02:03:54,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-11-07 02:03:54,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1326012366, now seen corresponding path program 1 times
[2020-11-07 02:03:54,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-11-07 02:03:54,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269481755]
[2020-11-07 02:03:54,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-07 02:03:54,825 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term
[2020-11-07 02:03:54,826 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts
[2020-11-07 02:03:54,912 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception:
java.lang.NullPointerException
at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.fastupr.paraoct.OctagonCalculator.normalizeVarNames(OctagonCalculator.java:153)
at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.fastupr.FastUPRCore.<init>(FastUPRCore.java:133)
at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.Accelerator.fastUprAcceleration(Accelerator.java:109)
at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.Accelerator.accelerateLoop(Accelerator.java:89)
at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:292)
at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.<init>(AcceleratedInterpolation.java:227)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:147)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.<init>(AutomatonFreeRefinementEngine.java:84)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.<init>(TraceAbstractionRefinementEngine.java:74)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:343)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:197)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.<init>(TraceAbstractionStarter.java:149)
at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
[2020-11-07 02:03:54,918 INFO L168 Benchmark]: Toolchain (without parser) took 3737.53 ms. Allocated memory was 163.6 MB in the beginning and 197.1 MB in the end (delta: 33.6 MB). Free memory was 140.1 MB in the beginning and 144.7 MB in the end (delta: -4.7 MB). Peak memory consumption was 29.9 MB. Max. memory is 8.0 GB.
[2020-11-07 02:03:54,919 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 163.6 MB. Free memory was 137.9 MB in the beginning and 137.8 MB in the end (delta: 135.1 kB). There was no memory consumed. Max. memory is 8.0 GB.
[2020-11-07 02:03:54,921 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.37 ms. Allocated memory is still 163.6 MB. Free memory was 139.5 MB in the beginning and 129.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB.
[2020-11-07 02:03:54,922 INFO L168 Benchmark]: Boogie Preprocessor took 70.04 ms. Allocated memory is still 163.6 MB. Free memory was 129.9 MB in the beginning and 128.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
[2020-11-07 02:03:54,923 INFO L168 Benchmark]: RCFGBuilder took 661.06 ms. Allocated memory is still 163.6 MB. Free memory was 128.3 MB in the beginning and 143.7 MB in the end (delta: -15.4 MB). Peak memory consumption was 16.2 MB. Max. memory is 8.0 GB.
[2020-11-07 02:03:54,924 INFO L168 Benchmark]: TraceAbstraction took 2638.51 ms. Allocated memory was 163.6 MB in the beginning and 197.1 MB in the end (delta: 33.6 MB). Free memory was 143.2 MB in the beginning and 144.7 MB in the end (delta: -1.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 8.0 GB.
[2020-11-07 02:03:54,928 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.25 ms. Allocated memory is still 163.6 MB. Free memory was 137.9 MB in the beginning and 137.8 MB in the end (delta: 135.1 kB). There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 352.37 ms. Allocated memory is still 163.6 MB. Free memory was 139.5 MB in the beginning and 129.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 70.04 ms. Allocated memory is still 163.6 MB. Free memory was 129.9 MB in the beginning and 128.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 661.06 ms. Allocated memory is still 163.6 MB. Free memory was 128.3 MB in the beginning and 143.7 MB in the end (delta: -15.4 MB). Peak memory consumption was 16.2 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 2638.51 ms. Allocated memory was 163.6 MB in the beginning and 197.1 MB in the end (delta: 33.6 MB). Free memory was 143.2 MB in the beginning and 144.7 MB in the end (delta: -1.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- ExceptionOrErrorResult: NullPointerException: null
de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.fastupr.paraoct.OctagonCalculator.normalizeVarNames(OctagonCalculator.java:153)
RESULT: Ultimate could not prove your program: Toolchain returned no result.
Received shutdown request...